Straight-lift elevator.



H. I. BUCK.y

STRAIGHT LIFT ELEVATOR.

APPLlcAlnN FILED FEB. a. |914.

l @g., v Patented Nov.. 27, 1917 2 SHEETS-SHEET I.

f] Ov farro/EWE f5 H. J. BUCK.

STRAIGHT LIFT ELEVATOR.

APPLICATION FILED FEB. a. 19|4.

1,@48969. Patented Nov. 27, 1917.

2 SHEETS-SHEET 2.

@www Ww/MQ l se PN WE@ 4HERMAN J. nnen, or nrrwoon crrr, PENNSYLVANIA,VAssIaNoN Yro Naannws GRAVITY CARRIER COMPANY, OF ELLWOOD vroan'rmN.

maracas.

To all rwhom t ma concern.'

Be it known t at I, HERMAN J. BUCK, citizen of the United States,resident of Ellwood City, county of Lawrence, State of Pennsylvania,have invented certam new and useful Improvements in Straight-LiftElevators, of which the following 1s a speelication. c. l

My invention relates to straight lift elevators for handlin merchandiseof various kinds and' partie arly to the carriage on which themerchandise is placed.

rIhe object of my invention is to provlde means for holding the-carriagein a horizontal position while it is passing over the top of theelevator or from the up to the down side.

Other objects of the invention will appear from the following detaileddescription.

. The invention consists generally in various constructions andcombinations, all as hereinafter described and particularly pointed outin the claims.

In the accompanying drawings formlng part of this specification,

Figure 1 is a sectional view of the upper portion of a straight liftelevator embodymg my invention,

Fig. 2 is a vertical sectional view,1l lus trating the means for mountmgthe carnage in the elevator and the driving mechanism therefor, l

Fig. 3 is a sectional view on the line m--m of Fig. 1.

In the drawing, 2 represents an upright frame having bearings at the topfor a shaft 3. Sprocket wheels 4 'are mounted on the shaft 3 for thesprocket chains or belts 5, similar wheels being provided at the bottomof the elevator, not shown. A gear wheel 6 is mounted on the shaft 3 andmeshes with a pinion 7 on a drive shaft 8 that is provided witha drivingpulley 9. The carriage consists preferably of a bar 10, preferably inthe form of an inverted T-rail, provided at each end with hanger arms 11pivotally connected at 12 to the sprocket chains or belts of theelevator. In practice, a series of these carriages are mounted on thebelts but for clearness of illustration I have only shown one of them,the others being substantially the same in construction and operation.rIhe bars 13 are mounted transversely of the bar 10 and secured theretoand have Specification of Letters Patent.

CITY, PENNSYLVANIA, A CURP STRAIGHT-LIFT ELEVATOR.

Patented Nov. 2t', 191'?.

Application led February 3, 1911i. Serial No. 816,143.

upper surfaces on which the 'articles or packages of merchandise to betransported are placed.

On the underside of one of these bars 13 and beneath the cross bar 10 ofthe carriage, I provide'a gear segment 14 mesh with the teeth of apinion 15 mounted on the shaft 3, said pinion in turn meshing wlt'h agear 16 on a shaft 17 that Vis driven through a pinion 18 and a gear 19secured on the hub of the sprocket wheel 4. This arrangement of gearingallows for the desired speed of operation of the pinion 15 to move thelower portion of the carriage across the elevator from one side to theother'commensurate with the travel of the pivots of the carriage on thebelts, the ob]ect being to maintain the carriage in a horizontalposition during such movement and prevent it from tllting or swingingwith the attendant danger of dislodging the packages thereon. The pinionis loosely mounted on the shaft 3 and is driven at a greater speed thansaid shaft. This speed of operation will be varied to suit differentelevators and the travel of the carriages.

'llhe hanger arms move upward between the vertical guides 20, the innerguide being` curved inwardly at its upper end, as indicated at Fig. 1.'Ihe guiding action of the outer upright guide ceases at the point wherethe curvature begins and a supplementary or auxiliary guide 21isprovided to bear upon the upper edge of the cross bar 10, therebyholding the carriage in a horizontal position until it passes out frombetween the guides. In Fig. 1 the cross bar or 'lV-rail is shown in theposition it occupies just before it passes out of engagement with theguides. The opposite or down side of the elevator is provided withguides 20 and 21 correspondingto those on the up sides of the havingteeth to dit dit

segment until the T-shaped cross bar of the carriage passes between theguides on the op osite or down side of the elevator.

-EVhile this takes place, the platform of the carriage will be movedfrom the up side of the elevator to the down side thereof, the surfaceof the carriage being held in a substantially horizontal position duringsuch movement.

I claim as my invention:

1. In a straight lift elevator, the combina- Ation with a drive shafthaving wheels thereon, elevating belts passing over said wheels, acarriage suspended from said belts, and a transverse gear segment on thelower side of the carriage, of a gear on the said shaft with which saidsegment is enga ed as the car.

riage passes from one side o the elevator to the other, and means foroperating said gear at a speed proportionate to the speed of thebelt-carrying wheels.

2. In a straight lift elevator, the combination with a drive shafthaving wheels thereon, elevating belts passing over said wheels, acarriage suspended at opposite sides from said belts, and a transversegear segment on the lower side of the carriage between the ends thereof,of a gear between the ends of said drive shaft with which said segmentis engaged as the carriage passes from one side of the elevator to theother, and means for operating said gear at a s eed proportionate tothat of the drive shalt 3. In a strai ht lift elevator, the combinat1onwith a drlve shaft having wheels thereon, elevating belts passing oversaid wheels, a carnage suspended from said belts, pairs of vertlcallydisposed guideways engaged by the lower outer portions of the carriageand curved inwardly at their upper ends, a transverse gear segment onthe lower side of the carriage between the ends thereof, of a gear onthe drive shaft intermediate its ends with which gear said segment isadapted to engage as the Acarriage crosses from one set of guides to theother, and means for operating sald gear at a speed proportionate to thespeed o f the belt-carrying wheels.

In wltness whereof, I have hereunto set my hand this th day of January,1914.

HERMAN J. BUCK. W1tnesses: I

FRANK E. MOORE, J os. W. HUMPHREY.

